EntityQ3550645· pop 8· linked from 191 articlesUnionvilleSign in to saveneighbourhood of Markham, OntarioWeather nowcached 157h ago24°few clouds 40% 7.4 m/s OpenWeatherMap7-day forecastvia Open-MeteoPlace detailsLocalityMarkhamRegionOntarioCountryCanadavia OpenStreetMap · GeoNamesWikidata factsInstance ofhuman settlementCountryCanadaLocated inMarkhamElevation+200Official websitewww.markham.caImageUnionville.JPGvia Wikidata · CC0On the mapConnectionsRegional Municipality of YorkEntityTorontoEntityCategoriesNeighbourhoods in Markham, OntarioPopulated places established in 1803